96649009681 has 12 divisors (see below), whose sum is σ = 113691685860. Its totient is φ = 81911195520.

The previous prime is 96649009663. The next prime is 96649009693. The reversal of 96649009681 is 18690094669.

It can be written as a sum of positive squares in 2 ways, for example, as 18464461456 + 78184548225 = 135884^2 + 279615^2 .

It is not a de Polignac number, because 96649009681 - 2⁷ = 96649009553 is a prime.

It is a super-2 number, since 2×96649009681² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (96649009081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 11076700 + ... + 11085421.

It is an arithmetic number, because the mean of its divisors is an integer number (9474307155).

Almost surely, 2^96649009681 is an apocalyptic number.

It is an amenable number.

96649009681 is a deficient number, since it is larger than the sum of its proper divisors (17042676179).

96649009681 is a wasteful number, since it uses less digits than its factorization.

96649009681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22162224 (or 22162217 counting only the distinct ones).

The product of its (nonzero) digits is 5038848, while the sum is 58.

The spelling of 96649009681 in words is "ninety-six billion, six hundred forty-nine million, nine thousand, six hundred eighty-one".